TRV Recommendation

[walkthewalk]

I'm looking for a low-mid priced TRV. Ideally British made.

I hear the Drayton TRV4's are highly recommended. But they are a bit pricey at £18 each.

http://www.screwfix.com/prods/26100..._-Drayton TRV4 White & Chrome TRV 15mm Angled

Are Drayton RT212 any good £9? http://www.screwfix.com/prods/25900...es/Drayton-RT212-White-Chrome-TRV-15mm-Angled

Or maybe these?
White 15mm Angled TRV and Lockshield £8
http://www.screwfix.com/prods/36326/Plumbing/Radiator-Valves/White-15mm-Angled-TRV-and-Lockshield

Is there anything in particular I should look out for, or avoid, feature wise?

 

[tamz]

Possibly these

http://danfoss-randall.co.uk/PCMPDF/336v02.pdf

at around £18 for a combi pack (includes lockshield)

or these

http://danfoss-randall.co.uk/xxTypex/286732_MNU17428142_SIT313.html

at around £10 for combi pack. Both have liquid sensors which react quicker. Stay away from wax sensors if possible.

Arguably the best valves on the market.